Your Key Never Exists. Your Assets Always Safe.
DefiShard splits your key into secure shares across devices. Sign transactions with both devices together—your complete key never exists anywhere.
The Extension Wallet Crisis
These were all "secure" users who did nothing wrong.
The problem is architectural.
Extension Wallets Are
Single Points of Failure
Over $1 billion lost since 2022. These aren\'t theoretical risks— these are real people who lost everything because their wallet software was compromised.
Ronin Network
March 2022
Slope Wallet
August 2022
LastPass Breach
December 2022
Atomic Wallet
June 2023
Traditional Extension
DefiShard
Four Steps to Security
Bank-grade cryptography, simplified for daily use.
Install Both
Download the browser extension AND the mobile app. Both are required for the MPC vault.
Pair Devices
Scan the extension QR code with your mobile app to create your distributed key shares.
Generate Shares
Your private key is generated as split shares. It never exists in full on any single device.
Sign Securely
Initiate on desktop, approve on mobile. Both devices sign without ever revealing the key.
Everything You Need
Powerful features designed for the security-conscious DeFi user.
MPC 2-of-2 Security
Threshold signatures with secret sharing. Your private key never exists—anywhere, ever.
Mobile Review
Review every detail on your phone. Catch scams before signing. Screenshot transactions.
Universal Compat
Works with Uniswap, Aave, Compound, and all your favorite DeFi protocols.
Seamless UX
Quick QR code scanning. Transactions complete in seconds. Familiar 2FA-style workflow.
Active Protection
Real-time threat detection. Warning system for suspicious transactions. Auto updates.
Easy Recovery
Secure backup options and social recovery available. Never lose access to your assets.
Watch How DefiShard Protects Your Assets
A 2-minute walkthrough showing the complete signing flow—from transaction initiation to mobile approval.
Bank-Grade Security
Built from the ground up with institutional-grade security standards. Your assets are protected by cutting-edge cryptographic protocols.
MPC Architecture
Multi-Party Computation ensures your private key never exists as a single entity. Two independent shares—neither reveals the key alone.
End-to-End Encryption
All communication between devices uses bank-grade encryption. Zero-knowledge architecture means we never see your keys.
Biometric Protection
Mobile signing requires biometric authentication (Face ID, Touch ID). Physical device access is mandatory.
Transaction Verification
Detailed transaction breakdown displayed on your mobile device for review before signing. Catch phishing attempts before they execute.
Security Audits
Security assessments by top-tier blockchain security firms. Open-source components available for community review.
Threat Detection
Real-time monitoring for suspicious activity. Automatic alerts for high-risk transactions and known malicious contracts.
Security-First Philosophy
We believe security shouldn't be sacrificed for convenience. DefiShard combines hardware wallet-level security with the seamless experience of software wallets. Your private key is never whole, never transmitted, and never stored—it exists only as distributed mathematical shares that come together momentarily to sign transactions.
Secure Your Assets.
Eliminate the Risk.
Experience the next generation of wallet security with MPC technology.
Chrome Extension
Available on Chrome Web Store
- ✓ Chrome, Brave, Edge
- ✓ Generates Share #1
- ✓ MPC Protocol
Mobile Authenticator
v1.0.0
Required to generate Share #2 and approve transactions. Your phone becomes your hardware wallet.
Download APKWaitlist for iOS